Results 181 to 190 of about 4,722 (253)

Building Blocks for Acetylenic Scaffolding Inspired by 6,6,12‐Graphyne

European Journal of Organic Chemistry, EarlyView.
6,6,12‐Graphyne is an elusive allotrope of carbon. Here, we present the synthesis and properties of a selection of useful molecular building blocks to advance the preparation of various segments of 6,6,12‐graphyne. These modules are derived from tri‐ and tetraethynylethene derivatives, di‐ and tetraethynyl‐substituted tolane derivatives, as well as ...
Florim Seljmani, Marie Erskov Krogh, Peter Lundgård Krøll, Mogens Brøndsted Nielsen   +3 more
wiley   +1 more source

Seasonal bromate formation in the Arctic snowpack: Implications for the bromine biogeochemical cycle. [PDF]

Sci Adv
Frassati S, Barbaro E, Cozzi G, Turetta C, Scoto F, Rossetti C, Roman M, Feltracco M, Kim K, Burgay F, Saiz-Lopez A, Francisco JS, Van Pelt W, Wang F, Cappelletti D, Lerda S, Bistoni G, De Angelis F, Barbante C, Gambaro A, Spolaor A.   +20 more
europepmc   +1 more source

Iron‐Photocatalyzed Ligand‐to‐Metal Charge Transfer‐Driven Decarboxylative Giese‐Type Reactions Under Mild Conditions

European Journal of Organic Chemistry, EarlyView.
Iron‐photocatalyzed LMCT enables decarboxylative hydroalkylation of Michael acceptors (Giese‐type reaction) under mild conditions. Using tailored ligands and a sterically hindered very mild aniline base, diverse carboxylic acids efficiently couple with sensitive Michael acceptors, including maleimides.
Luca Mareen Denkler, Amrita Chaudhuri, Tak Shing Jason Ngan, Ali Dbouk, Qing Zhuo, Onisha Herath Pathirannehalage, Christopher Heinz Köhler, Shen Yen Ho, Idris Karakaya, Ala Bunescu   +9 more
wiley   +1 more source

Photochemical Cu(iii)-mediated trifluoromethylation of (hetero)arenes and biomolecules. [PDF]

Chem Sci
Pospíšil P, Motornov V, Michal O, Šálková L, Boháčová S, Slanina T, Tarábek J, Klepetářová B, Beier P.   +8 more
europepmc   +1 more source

Sustainable Iron Catalysis for Chemodivergent Oxidation of Lignin‐Based Vanillyl Alcohol: Selective Access to Vanillin and Vanillic Acid

European Journal of Organic Chemistry, EarlyView.
Green reaction media enable chemodivergent oxidation of vanillyl alcohol, selectively affording vanillin or its fully oxidized counterpart, vanillic acid. The use of an earth‐abundant, inexpensive, and nontoxic iron catalyst for the transformation of lignin‐derived alcohol to fine chemicals underscores the sustainability of the process. A low E‐factor (
Rasmiranjan Hota, Chinmaya Kumar Meher, Bidraha Bagh   +2 more
wiley   +1 more source

Sustainable Approaches for the Protection and Deprotection of Functional Groups. [PDF]

Chemistry
Jin JH, An M, Jeon M, Kim J, Kang SM, Choi I.   +5 more
europepmc   +1 more source

Expanding the Scope of 1,2‐Diazepines Through Alternative Activation Strategies

European Journal of Organic Chemistry, EarlyView.
Often overlooked due to tedious synthetic routes, 1,2‐diazepines can be found in handful of biorelevant molecules. Previous reports from our group lifted the principal synthetic lock: a rapid and user‐friendly protocol to reach monocyclic 1,2‐diazepines from readily available pyridines and electrophilic activating groups. Herein, we extend the scope of
Alexis Leblais, Diego Robles, Aurélie Damond, Xavier Moreau, Clément Ghiazza   +4 more
wiley   +1 more source

Sunlight can turn smoldering pine wood smoke into a glass. [PDF]

NPJ Clean Air
Golay ZM, Vandergrift GW, Kamal S, China S, Nizkorodov SA, Bertram AK.   +5 more
europepmc   +1 more source

Mechanical stability in flexible perovskite solar cells: Interface engineering and device design

FlexMat, EarlyView.
Statistics of the improvement methods for f‐PSCs. Abstract Flexible perovskite solar cells (f‐PSCs) demonstrate significant potential for application in next‐generation wearable electronic devices and photovoltaic building integration due to their high power conversion efficiency and excellent power‐to‐weight ratio. However, the inherent brittleness of
Hong‐Yi Hou, Xin‐Yi Zeng, Jian‐Xin Tang, Yan‐Qing Li   +3 more
wiley   +1 more source

Advanced Chlorine Photolysis for Carbamazepine Degradation: Tuning Radicals for Dissolved Organics. [PDF]

ACS ES T Water
Osei-Appau C, Kamat M, Petit E, Le Beux J, Teychené B, Tarabara VV, Zaviska F, Lesage G, Snow SD.   +8 more
europepmc   +1 more source